Spray-pump.



O. W. PARSELI..

SPRAY PUMP.

APPLICATION FILED MAR. IB. |916.

UNITED STATES BAYERN@ @BRICE ORLANDO w. rAnsnLL, or BAD AXE, MICHIGAN.

SPRAY-PUMP. ,l

T0 all whom t may concern.'

Be it known that I, ORLANDO W. PARsELL, a citizen of the United States of America, residing at Bad Axe, in the county of Huron and State of Michigan, have invented certain new and useful Improvements in Spray- Pumps, of which the following is a specication, reference being had therein to the accompanying drawings.

The. invention relates to pumps, being more particularly designed for use in the spraying of vegetation, and itis the object of the invention to obtain a durable construction and one which will be maintained free from clogging. To this end the invention comprises various features of construction as hereinafter set forth.

In the drawings:

Figure 1 is a vertical central section partly in elevation; and

Fig. 2 is an elevation of the pump handle, f

showing the connection of the same with the plunger-operating mechanism.

A is a hollow casing forming the air chamber and delivery conduit of the pump. B is a hollow cylinder or barrel, having a threaded engagement with the lower end of the casing A and extending downward therefrom. G is a barrel of larger diameter telescopically engaging the cylinder B and preferably packed by suitabley piston rings D. E is a sleeve member engaging the casing A and adjustably secured thereto by suitable means, such as set-screw F, said member being provided with flanges G for seating upon the barrel or receptacle for the liquid to be pumped. -H is the operating handle which is connected with the barrel C so as to telescopically reciprocate the same upon the cylinder B, thereby producing the pumping action, suitable check-valves I and J being arranged respectively at the upper end of the cylinder B and the lower end of the barrel C. p

It is one of the objects of my invention to provide an operating mechanism for reciprocating the barrel C, which relieves the latter from side thrust, thereby avoiding wear. This I have accomplished by providing as an operating connection a rod K arranged parallel to the axis of the barrels B and C and casing A, and slidably engaging bearings L and L secured to said casing. The lower end of the rod K has secured thereto a bifurcated member M which extends upon opposite sides ofthe barrel C and is provided Patented May 7, i918.

Application led March 18, 1916. Serial No. 85,055.

with bearings l engaging diametrically opposite trunnions M2 on said barrel. Thus the reciprocation of the rod K will communicate a corresponding movement to the barrel C without any tendency toward pulling said barrel against the side of the cylinder B, as would be the case were the axis of the rod K non-parallel to the axis` of the cylinder.

As the rod K is held by the bearings L and L from lateral movement it is necessary to provide a fulcrum for the lever or handle I-I, which is laterally movable to compensate for the angular adjustment thereof. At the same time it is desirable to avoid lateral stress on the rod K which would cause vibration thereof in action. This result I have obtained by providing a fulcrum link N pivotally attached at N and N2 respectively to the lever I-I and casing A, said link being provided with bearings O and O upon oppo- 'site sides of its center for contacting with cooperating bearings upon the casing A, so as to form stops for limiting the lateral oscillation of the link. As shown in Fig. 1, the lever or handle H is in horizontal position, and in this position the pivot N is vertically above the pivot N2, while the bearing O to the right of the center of the link is in contact with the bearing at the top of the casing A. This limits the lateral movement of the link N toward the right, but permits limited freedom of movement to the left. In Fig.

.2 is shown in full and dotted lines the two extreme angular positions of the handle or lever II, in each of which the link N is rocked toward the left so as to bring the bearing O in contact with the coperating bearing on the top of the casing A. rIhe engagement of these bearings will prevent further movement of the link N to the left, and thus will prevent lateral deflection of the rod K. The link N preferably engages a channel bearing P formed in the top of the casing A, the sides of said channel forming the bearings for the pivot pin N2. c

As has been stated, the casing A performs the double function of an air chamber and a delivery conduit. To this end there are arranged within the casing a plurality of tubes Q, Preferably cast in to a cross partition Q forming a partition in the casing. These tubes extend downward to near the bottom of the casing and form the delivery pipes for the liquid, while the air which is trapped in the chamber surrounding the placed in the core which is used in casting the hollow casing A, while in seryice they are less likely to of-the barrel C with which said plunger is tubes will act as a cushion for maintaining a steady iiow. I have found it advantageous to employ a plurality oftubes rather'than a single tube, as they may more readily be become clogged than a single tube.

The check-valves I and kJaare seated respectively upon bearings formedat the upper end of the cylinder B, which latter forms the plunger of the pump, and the lower end engaged. F or these valves I preferably employ balls, which are self-seating and may y be easily removed when necessary for repair.

The liquids which are usually employed for the spraying of trees and other vegetation contain solid matter in suspension, which if permitted to accumulate is likely to clog the pump. It is therefore essential to constantly agitate 'the liquid within the lreceptacle and particularly to agitate'th'at The effect of this construction in the recip- 'rocating movement of thebarrel is to throw the :liquid outward both in the downward and upward movements thereof, so as to carry away from the mouth of the barrel any accumulation of sediment. v

To permit of steady pumping it is desirable to provide a relief for a portion ofthe liquid so as tok avoid too high pressure. Such a relief-valve I have arranged at S connected to the lower end of the casing A and controlledV by an operating handle S extending upward andv outof the container for the liquid. Instead, however, of discharging the liquid from this valve directly, I have connected to the valve a conduit T, which is extended downward into proximity to the 'mouth of the barrel C. Thus the small quantity of liquid which is discharged through Vthe relief-valve will assist in agitating the liquid at the mouth of the barrel and preventing the accumulation of sediment.

By reason of the various novel features of construction as above described, my improved pump is highly eiiicient when used Copies of this patent may be obtained for ,ve cents each, by addressing .the Commissioner of Patents, v

Lacasse y'being attached to the barrel, a lever for actuating the upper end'of said rod pivotally attached thereto, and a fulcrum linkfor said lever connected to said casing, said `linkbeing provided with stop bearings upon opposite sides of said center for limiting the lateral angular deflection thereof during the operation of said lever. y

Ina pump, the combination with a reciprocating plunger, of a rod for actuating said plunger, bearings for said rod, oompelling rectilinear movement thereof, a lever for actuating said rod pivotally attached thereto, and a fulcrum link Vforsaid` lever Ipivotally attached thereto and to a member rigid with said bearings, said link being provided with stops upon opposite sides ofthecenter'thereof for engaging said fixed member to limit lateral deflection of the link.

3. In a pump, the combination with a casing, of a reciprocating plunger, -a rod for actuating said plunger, bearings secured to said casing for engaging `saidro'd and'com pelling rectilinear movement thereof parallel to fthe axis ofsaid plunger, a lever pivotally attached to'said.rod, and a fulcrum link for said lever pivotally attached thereto and Ato said'casing, said link havingopl positely-extending xwing: portions provided with angular 'faces providing a limited-clearance for angular deflection, and operating as stops for limiting said angular movement.

4l. In a pump, the vcombination withfa casing 'forming an air chamber and delivery conduit of a plunger depending therefrom and a barrel telescopically Aengaging :said plunger, means for reciprocating said barrel in relation to said plunger, a relief-valvefor said casing, and a conduit extending from said relief-valve to the mouth ofsaid barrel and forming v a ymeans for agitating the liquid and preventing the accumulation of sediment thereat Intestimony whereof I aiiix my signature.

ORLANDO W. PARSELL.

Washington, D. C. Y A 

